/**
* <summary>
* Returns true if the input (considered as binary) is active (detection value is smaller than the specified <c>threshold</c>), and false otherwise.
* <para>
* </para>
* <para>
* </para>
* </summary>
* <returns>
* either <c>YProximity.ISPRESENT_FALSE</c> or <c>YProximity.ISPRESENT_TRUE</c>, according to true if
* the input (considered as binary) is active (detection value is smaller than the specified
* <c>threshold</c>), and false otherwise
* </returns>
* <para>
* On failure, throws an exception or returns <c>YProximity.ISPRESENT_INVALID</c>.
* </para>
*/
public int get_isPresent()
{
if (_func == null)
{
throw new YoctoApiProxyException("No Proximity connected");
}
// our enums start at 0 instead of the 'usual' -1 for invalid
return(_func.get_isPresent() + 1);
}